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Data Logger with tinyK20 Board

For a research project we would like to use the tinyK20 to log gyro sensor data. For this I have created a quick-n-dirty project to explore how feasible it is. The tinyK20 has all the pins on the outside of the board, so I’m able to put it on a bread board:

tinyK20 on Breadboard

The tinyK20 has been designed with the data logger as one of its applications. For this, there is a micro-SD card socket on the bottom side of the PCB:

Micro SD Card Socket on TinyK20

The cool thing with the tinyK20 is that I can use it to debug another board. As a bonus, the tinyK20 is able to power the target board trough the SWD cable:

💡 The internal USB regulator of the Freescale Kinetis K20 is able to offer around 100 mA. I use the DC-DC converter on the backside of the tinyK20 to power more than the 100 mA.

Thanks :-). We were thinking about providing some of the boards for sale. It is a matter of demand and efforts. So right now there is no shop for it, but certainly could be considered.
Our PCB manufacturer has not offered BTO service. Do you have a recommendation of a manufacturer doing this?

No, not really 😦
But what is about http://www.embedded-projects.net/ they offer such a service as far as I know. Or they can be persuaded to pick up your design into their shop?
Or https://www.beta-layout.com. What is about RS-Components or Farnell didn’t they assist developers to bring their ideas to the market?

Hi Dave,
that board is something we did internally, with very minimal effort. Doing a Kickstarter project is by far something more time consuming. Plus I think the usual Kickstarter fee is 15-20% too. I have shipped some boards to the ones who have contacted me directly. I’ll be at the NXP FTF Technology Forum in Austin in May this year, so I could carry a few boards with me if there is any interest.

Yes, a KS is a bit of work, but if you’re careful with your calculations, you should be able to minimize risk (to losing money from your own pockets) 🙂 In large enough quantities, the tinyK20 could end up being pretty reasonably priced! Well, hopefully you’ll change your mind, or maybe someone else will run the KS for your design! I really like it and might have to order a batch from OSHpark to try it out.